The center span is lifted by the action of two large concrete slabs of slightly greater weight than the lifted span, which block traffic when fully down. They are set in downwards motion to lift the bridge by a very slight action of the motors, as gravity does the rest.
Rather unusually, a public non-toll road travels directly underneath the approach span. A municipal garage is also located underneath the rising road after the tollbooth. During times when the bridge is up for a boat passing underneath, large traffic backups are created on Keim Boulevard, the road that functions as the route to the bridge from U.S. Route 130 and Broad Street.
The tollbooths are equipped with E-ZPass and the toll — $2.00 for cars — is paid by those cars going north to the Pennsylvania side.
New bridges for the site have been proposed, but most would require the access ramp to extend out to Route 130, which would result in the destruction of historic buildings, as well as the large industrial park near the bridge.